ASN Wikibase Occurrence # 239960
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| Date: | Wednesday 5 August 2020 |
| Time: | 17:45 LT |
| Type: |  Hughes 369D |
| Owner/operator: | Signature Utility |
| Registration: | N104SU |
| MSN: | 670151D |
| Year of manufacture: | 1977 |
| Total airframe hrs: | 9856 hours |
| Engine model: | Rolls-Royce 250-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Jackson County Delia, KS -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Cargo |
| Departure airport: | Delia, KS |
| Delia, KS | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
While conducting an aerial tree-trimming flight with an external load aerial saw, the pilot heard a loud 'thump' and felt a collision. A heavy vibration was felt, and the pilot landed in a nearby cornfield without further incident. Upon landing substantial damage was found to the main rotor blades with embedded pieces of tree bark and vegetation found in the blades. The pilot reported that there were no mechanical malfunctions that contributed to the accident. The aerial saw was suspended about 120 ft below the helicopter. The operator noted that this distance is normally adequate to prevent foreign object damage (FOD) to the main rotor blades.
Probable Cause: Foreign object damage sustained to the main rotor blades due to aerial tree trimming.
Accident investigation:
 |
|
Sources:
NTSB CEN20CA334
https://flightaware.com/live/flight/N104SU
FAA register: https://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=104SU
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 14-Aug-2020 03:40 | Geno | Added |
| 02-Mar-2021 18:42 | rudy | Updated |
| 03-Mar-2021 20:49 | harro | Updated [Source, Category] |
| 04-Feb-2022 07:13 | Anon. | Updated [Source] |
| 08-Jul-2022 05:16 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative, Accident report] |
Corrections or additions? ... Edit this accident description
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